BIOL 1202 : Online Quizzes
Document Summary
Genetically, there are four distinct lineages, but the 13 species are currently classified among three genera. The first lineage to diverge from the ancestral lineage was the warbler finch (genus certhidea). Next to diverge was the vegetarian finch (genus camarhynchus), followed by five tree finch species (also in genus camarhynchus) and six ground finch species (genus geospiza). Molecular analysis in 1999 shows, the vegetarian finch is genetically no more similar to the tree finches than it is to the ground finches, despite the fact that it is placed in the same genus as the tree finches. However, males with bright dorsal surfaces (i. e. , backs) are easier for hawks to spot and therefore make them more often preyed upon. What is the most likely explanation: founder effect, directional selection for extra toes, high rate of mutation, bottleneck effect, exposure to jimmy buffett music, phenylketonuria (pku) is an autosomal recessive genetic disorder.
